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PY Online Forums - Bringing the Pontiac Hobby Together > General Classic PONTIAC TECH > Pontiac - Street > Finally, the commonsense reason not to prefill an oil filter
 
 
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Old 10-11-2022, 06:37 AM
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Tom Vaught Tom Vaught is offline
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Originally Posted by JSchmitz View Post
I fill my filters. The chances of bearing damage, from momentary oil starvation, are much higher than from contamination in new oil. That's where I'm "placing my chips".

How does everyone feel about blocking the oil filter bypass valve? LOL!
In some applications the mod has benefits, perhaps one being racing as
the HO Guys recommended that mod years ago.

That being said the bypass is there for a couple of reasons:

Filter plugged or very cold start-up conditions where the oil needs a path
to the oil galleries vs shearing the oil pump shaft.

That is why the OEMs test at -40 degrees F in Canada.

Tom V.

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